| OC | obstetrical conjugate; occlusocervical; office call; on call; only child; optic chiasma; oral contra... |
|---|---|
| OCA | oculocutaneous albinism; olivopontocerebellar atrophy; oral contraceptive agent |
| OCC | object-centered coordinate [method]; oral cholecystography |
| OCG | omnicardiogram; oral cholecystogram |
| OCH | oral contraceptive hormone |
| oil of crispmint | Volatile oil from the flowering tops of Mentha spicata (family Labiatae, pharmaceutical aid (flavor) and a carminative. Synonym: oil of crispmint, oil of curled mint. (05 Mar 2000) |
|---|---|
| oil of cubeb | Volatile oil of the unripe fruit of Piper cubeba (family Piperaceae). Formerly used as a urinary antiseptic. (05 Mar 2000) |
| oil of curled mint | Volatile oil from the flowering tops of Mentha spicata (family Labiatae, pharmaceutical aid (flavor) and a carminative. Synonym: oil of crispmint, oil of curled mint. (05 Mar 2000) |
| oil of dwarf pine needles | Volatile oil from the fresh leaves of Pinus montana (family Pinaceae). Pleasant pine odour; used as a pharmaceutical aid (flavor and perfume). Has been used as an expectorant. (05 Mar 2000) |
| oil of eucalyptus | Volatile oil from the fresh leaves of Eucalyptus globulus (family Myrtaceae) and some other species of Eucalyptus; native to Australia; pungent oil with a spicy, cooling taste. Has been used as an aromatic in inhalants, as an expectorant, anthelmintic, and local antiseptic. (05 Mar 2000) |
| oil of fennel | Volatile oil from the dried fruit of Foeniculum vulgare (family Umbelliferae). An aromatic oil with the odour and taste of fennel, similar to anise; used as a flavoring agent in pharmaceuticals. Has been used as a carminative. (05 Mar 2000) |
| oil of jojoba | A liquid wax ester mixture extracted from ground or crushed seeds from Simmondsia chinensis and S. Californica (family Buxaceae), desert shrubs native to Arizona, California, and northern Mexico. Used extensively in cosmetics for alleged skin softening and lubricating properties; other uses include as lubricant, fuel, chemical feedstock, substitute for sperm whale oil. Synonym: oil of jojoba. (05 Mar 2000) |
| oil of juniper | Volatile oil from the dried ripe fruit (berries) of Juniperus communis (family Cupressaceae). Formerly used as a diuretic. Used in perfumery. Synonym: juniper berry oil. (05 Mar 2000) |
| oil of lavender | Volatile oil from fresh flowering tops of Lavandula officinalis (family Labiatae). Aromatic oil used in perfume and as a flavoring agent. Has been used as a carminative. (05 Mar 2000) |
| oil of lemon | Volatile oil expressed from fresh peel of Citrus limonum (family Rutaceae). Aromatic oil used for flavoring pharmaceuticals, liqueurs, pastry, foods, beverages, and in perfumes. (05 Mar 2000) |
| oil of lemon grass | Volatile oil from Cymbopogon citratus and of C. Flexuosus (family Gramineae). Used in perfumery and as a source of citral for the synthesis of vitamin A. (05 Mar 2000) |
| oil of pennyroyal | Either American or European. The former is a volatile oil derived from the flowering tops and leaves of Hedeoma pulegioides (family Labiatae). Contains pulegone and ketones. European is oil of pulegium; a volatile oil from Mentha pulegium (family Labiatae); about 85% pulegone. Has been used as an aromatic carminative, abortifacient and insect repellent. (05 Mar 2000) |
| oil of peppermint | A volatile oil containing menthol (not less than 50% of total) obtained by steam distillation from the fresh flowering plant Mentha piperita (family Labiatae). Used as a pharmaceutical aid (flavor) and in flavoring liqueurs; a carminative. (05 Mar 2000) |
| oil of rose | A volatile oil from the fresh flowers of Rosa gallica and R. Damascena and other members of the Rosaceae family. Used largely in perfumery; ointments, and toilet preparations. Synonym: attar of rose, essence of rose, otto of rose. (05 Mar 2000) |
| oil of spearmint | Volatile oil from the flowering tops of Mentha spicata (family Labiatae, pharmaceutical aid (flavor) and a carminative. Synonym: oil of crispmint, oil of curled mint. (05 Mar 2000) |